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Merged Nathan from lp:~nlws/drizzle/fix-string-c-ptr-overrun

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drizzled/replication/reporting.cc
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#include <drizzled/server_includes.h>
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#include <drizzled/replication/reporting.h>
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#include <drizzled/gettext.h>
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void
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Slave_reporting_capability::report(loglevel level, int err_code,
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                                   const char *msg, ...) const
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{
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  void (*report_function)(const char *, ...);
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  char buff[MAX_SLAVE_ERRMSG];
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  char *pbuff= buff;
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  uint32_t pbuffsize= sizeof(buff);
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  va_list args;
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  va_start(args, msg);
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  switch (level)
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  {
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  case ERROR_LEVEL:
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    /*
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      It's an error, it must be reported in Last_error and Last_errno in SHOW
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      SLAVE STATUS.
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    */
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    pbuff= m_last_error.message;
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    pbuffsize= sizeof(m_last_error.message);
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    m_last_error.number = err_code;
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    report_function= sql_print_error;
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    break;
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  case WARNING_LEVEL:
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    report_function= sql_print_warning;
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    break;
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  case INFORMATION_LEVEL:
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    report_function= sql_print_information;
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    break;
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  default:
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    assert(0);                            // should not come here
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    return;          // don't crash production builds, just do nothing
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  }
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  vsnprintf(pbuff, pbuffsize, msg, args);
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  va_end(args);
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  /* If the msg string ends with '.', do not add a ',' it would be ugly */
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  report_function(_("Slave %s: %s%s Error_code: %d"),
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                  m_thread_name, pbuff,
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                  (pbuff[0] && *(strchr(pbuff, '\0')-1) == '.') ? "" : ",",
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                  err_code);
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}